778 ZOOLOGICAL GLOSSARY 



viVEBRiD^. A family of carnivores comprising the civets, genets, and mongooses. 



Vol vox. An actively motile colony of flagellate protozoa, found in fresh-water pools: some- 

 times classed as a green alga, 179 



VoRTicELLA. Bell-animalcule: ciliate protozoon which grows on the stems of fresh-water plants, 

 179 



VuLPEs vuLPES. The common fox: a carnivore (Canidae). 



WALCKEy\ERA AcuMisATA. A spccics of Spider : an arachnid (Araneida). 

 WixTERiA. A deep-sea teleostean fish. 



Xanthvsia. Mexican night-lizard: a lacertilian. 



XENARTHBA. An Order of mammals comprising the sloths, ant-eaters and armadillos. 



Xenopvs l^vis. The African clawed toad: an aquatic anuran amphibian, 337 



Xerus. African ground squirrel: a rodent (Sciuridse). 



Xiphias OLADivs. The sword-fish: a teleostean (relative of mackerel family), 294 



xiPHOSURA. An order of arachnids comprising the king-crabs {Limulus, etc.). 



Zaglossvs. a relative of the echidna, found in New Guinea: a monotreme. 



Zamems. a genus of colubrid snake including the rat-snake of India and the American 



black snake: Ophidia. 

 Zesaidura macroura. The mourning dove of America, so called because of its plaintive 



note: Columbidae. 

 Zesiox. Deep-sea teleostean fish (relative of the John Dory). 

 ZoyosAURus. Malagasy lizard: lacertilian reptile. 



ZoNURVs GioANTEUs. Great girdled lizard of Africa: lacertilian reptile. 

 ZORAPTERA. An Order of minute insects, resembling termites. 

 ZosTEROPx jAPOxivA. Japanese white-eye: a passerine bird. 



